// listEvents lists the event types supported by the device.
func listEvents(set evdev.Bitset) string {
var list []string
for n := 0; n < set.Len(); n++ {
if !set.Test(n) {
continue
}
switch n {
case evdev.EvSync:
list = append(list, "Sync Events")
case evdev.EvKeys:
list = append(list, "Keys or Buttons")
case evdev.EvRelative:
list = append(list, "Relative Axes")
case evdev.EvAbsolute:
list = append(list, "Absolute Axes")
case evdev.EvMisc:
list = append(list, "Miscellaneous")
case evdev.EvLed:
list = append(list, "LEDs")
case evdev.EvSound:
list = append(list, "Sounds")
case evdev.EvRepeat:
list = append(list, "Repeat")
case evdev.EvForceFeedback,
evdev.EvForceFeedbackStatus:
list = append(list, "Force Feedback")
case evdev.EvPower:
list = append(list, "Power Management")
case evdev.EvSwitch:
list = append(list, "Binary switches")
default:
list = append(list, fmt.Sprintf("Unknown (0x%02x)", n))
}
}
return strings.Join(list, ", ")
}
// listState prints the global key/button state, as defined
// in the given bitset.
func listState(set evdev.Bitset) {
for n := 0; n < set.Len(); n++ {
// The key is considered pressed if the bitset
// has its corresponding bit set.
if !set.Test(n) {
continue
}
fmt.Printf(" Key 0x%02x ", n)
switch n {
case evdev.KeyReserved:
fmt.Printf("Reserved")
case evdev.KeyEscape:
fmt.Printf("Escape")
case evdev.BtnStylus2:
fmt.Printf("2nd stylus button")
// more keys/buttons..
}
fmt.Println()
}
}